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#1
08-04-2008, 08:12 PM
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79 TA posi question
Hi,
I'm putting a 79 TA posi in & wanted to know if it is the 8.2" or 8.5"? Also, do they make a 3.55 for it or do I have to go with a 3.42 or 3.73? Thanks!
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************************************************** ******************* 73 TA 4 spd #'s match red/white - "STOLEN" AT TERRY SPEAR's SHOP IN Columbia TN ~mid 2014 Last offical pic of the car can been seen here: http://clubs.hemmings.com/pontiactn/...%20-%20rev.pdf People have seen it posted FS on Craigs List back in late 2013 early 2014.... ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ IF YOU HAVE ANY INFO ABOUT IT PLEASE CONTACT ME!!! |
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#2
08-04-2008, 08:59 PM
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should be the 8.5 corporate. I don't think the 3.55 is available; 3.42 or 3.73 are the choices.
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69 Bird w/1970 400 block(409 cubes), #64 heads, hyd. roller, Q-jet by Jeff E., original interior, ps, pdb, th350, and 3.73 gears. Pump gas, street driven muscle. 3800 lbs. race weight. Best, 11.39 @118, my son's car. 79 T/A w/463, Scat crank, Eagle rods, Icon pistons, Lunati solid roller, 262/270, KRE 325 heads, Northwind intake, QF950 carb, full interior, ps, pdb, th350, and 3.73 gears. Pump gas, 3650 lbs. race weight. 10.68 @ 126 so far... no tuning yet. |
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#3
08-04-2008, 09:06 PM
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There is definitely no 3.55 set available for the 8.5 rear. I checked every supplier a couple of months back and ended up with a 3.42 set.
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Some Fear, Because if you've never been afraid- just a little. You're obviously not going as fast as you could be. |
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#4
08-05-2008, 12:57 AM
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I think that 3:55 is a 12 bolt ratio.
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#5
08-05-2008, 05:04 PM
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Thanks for the help guys. I'll prob go for the 3.73
 That LS1 likes those big gears...
__________________
************************************************** ******************* 73 TA 4 spd #'s match red/white - "STOLEN" AT TERRY SPEAR's SHOP IN Columbia TN ~mid 2014 Last offical pic of the car can been seen here: http://clubs.hemmings.com/pontiactn/...%20-%20rev.pdf People have seen it posted FS on Craigs List back in late 2013 early 2014.... ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ IF YOU HAVE ANY INFO ABOUT IT PLEASE CONTACT ME!!! |
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#6
08-06-2008, 12:48 PM
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BTW, who has the best prices for a posi/rear rebuild kit & gears?
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************************************************** ******************* 73 TA 4 spd #'s match red/white - "STOLEN" AT TERRY SPEAR's SHOP IN Columbia TN ~mid 2014 Last offical pic of the car can been seen here: http://clubs.hemmings.com/pontiactn/...%20-%20rev.pdf People have seen it posted FS on Craigs List back in late 2013 early 2014.... ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ IF YOU HAVE ANY INFO ABOUT IT PLEASE CONTACT ME!!! |
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#7
08-06-2008, 02:56 PM
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thought 79 models all got 7.5 rear ends?
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#8
08-06-2008, 06:16 PM
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No, the 2nd gen Birds got the 8.5" rear through 81. When the Turd Gen came out they started really scrimping.
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 ___________________________________ "Objects in mirror are closer than they appear" 
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#9
08-06-2008, 07:57 PM
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Quote:
I bought an new Eaton 12 bolt Posi carrier about 6 months ago from a dealer type of vendor & his price was quite a bit cheaper than any others I found. I believe he also sold gears & bearings. |
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#10
08-06-2008, 11:02 PM
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There's been several ring and pinion sets listed here in firebird parts for sale, pretty cheap.
Make sure you know which carrier you have, before you start buying gears. 2.41 & 2.56 are out there by themselves. 2.73 or 278 and lower, everything else fits. |
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